It is called Final Blueprint.
Unlike every other engineering document, it does not describe a spacecraft, weapon, computer, or machine.
It describes how humanity could survive the collapse of modern civilization.
The blueprint contains plans for self-sustaining cities, artificial ecosystems, underground agriculture, autonomous manufacturing, renewable energy, and technologies capable of rebuilding society after a global catastrophe.
At first Ethan believes it was simply an eccentric experiment created by an unknown American inventor.
Then natural disasters begin occurring exactly as predicted in the blueprint.
Someone created Final Blueprint decades ago because they knew the world would eventually need it.
As governments scramble to reconstruct the technology, Ethan discovers the final pages contain a terrifying warning:
The blueprint was never designed to prevent the collapse.
It was designed to determine who would survive it.